WTB: STK043 stereo amplifier chip

gilwe · 16th January 2009, 05:37 AM

I'd love to buy if any of you have a spare one...

This is for fixing a Fisher RC-1022 receiver. Thanks !

(email me: gil_we at yahoo.com)

sakis · 16th January 2009, 08:55 AM

in athens greece
for the astronomical figure of 36 euros each ( !!!!!! )

no web page you have to call the company +302108621500
mr panagiotis

they probably ship them anywere

they have also 5 pcs available

gilwe · 17th January 2009, 10:33 AM

Thanks !

I've seem them going from as low as 13$,
but no shipping to the location where I'm at...

jaycee · 17th January 2009, 12:44 PM

The price of them is astronomical!

Personally, I'd see about retrofitting some small amp circuit in there. Something with TIP142/147 darlingtons for example.

There might also be other kinds of STK that you can use that are pin compatible, more readily available and cheaper.

sakis · 17th January 2009, 01:18 PM

Quote:

Originally posted by jaycee
The price of them is astronomical!

Personally, I'd see about retrofitting some small amp circuit in there. Something with TIP142/147 darlingtons for example.

There might also be other kinds of STK that you can use that are pin compatible, more readily available and cheaper.

the price for a thing like that is very expensive ( on the other hand i dont like stk sound any way)
..... depainting on the rail voltage i would be very happy to locate inside a couple of very happily P3A borads ....

you may wana check this on esp pages .....

jaycee · 17th January 2009, 01:42 PM

Actually now I come to think about it, what I would do is retrofit some LM3886s into it. They are small compared to the STK and you could probably do a point-to-point wiring if you don't feel like doing a small PCB.

Also, they will sound better - the STK-043 datasheet says 20W output power into an 8 ohm load at 1KHz has a THD of 0.4%! The LM3886 is far superior in this regard.

djk · 18th January 2009, 07:39 AM

The STK043 is a dual power amplifier.

http://audiolabga.com/pdf/STK040.pdf

You could try a LM4780, or hack it up for two LM3886.

http://www.national.com/mpf/LM/LM4780.html

jaycee · 18th January 2009, 07:44 AM

Yeah I meant to say 2xLM3886. You'd easily fit 2 LM3886 chips in the same place as the STK, as theyre quite big. LM4780 would work too but the pin spacing is a bit of a pain.

16th January 2009, 05:37 AM	#1
gilwe diyAudio Member Join Date: Nov 2007	WTB: STK043 stereo amplifier chip I'd love to buy if any of you have a spare one... This is for fixing a Fisher RC-1022 receiver. Thanks ! (email me: gil_we at yahoo.com)

16th January 2009, 08:55 AM	#2
sakis diyAudio Member Join Date: Jan 2006 Location: nea makri athens greece	available in athens greece for the astronomical figure of 36 euros each ( !!!!!! ) no web page you have to call the company +302108621500 mr panagiotis they probably ship them anywere they have also 5 pcs available __________________ SERVICE ΙΑΠΩΝΙΚΩΝ ΜΗΧΑΝΗΜΑΤΩΝ ΗΧΟΥ www.eastelectronics.gr

18th January 2009, 07:39 AM	#7
djk diyAudio Member Join Date: Feb 2001 Location: USA	The STK043 is a dual power amplifier. http://audiolabga.com/pdf/STK040.pdf You could try a LM4780, or hack it up for two LM3886. http://www.national.com/mpf/LM/LM4780.html __________________ Candidates for the Darwin Award should not read this author.

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17th January 2009, 10:33 AM	#3
gilwe diyAudio Member Join Date: Nov 2007	Thanks ! I've seem them going from as low as 13$, but no shipping to the location where I'm at...

17th January 2009, 12:44 PM	#4
jaycee diyAudio Member Join Date: Apr 2004 Location: Norwich, UK	The price of them is astronomical! Personally, I'd see about retrofitting some small amp circuit in there. Something with TIP142/147 darlingtons for example. There might also be other kinds of STK that you can use that are pin compatible, more readily available and cheaper.

17th January 2009, 01:42 PM	#6
jaycee diyAudio Member Join Date: Apr 2004 Location: Norwich, UK	Actually now I come to think about it, what I would do is retrofit some LM3886s into it. They are small compared to the STK and you could probably do a point-to-point wiring if you don't feel like doing a small PCB. Also, they will sound better - the STK-043 datasheet says 20W output power into an 8 ohm load at 1KHz has a THD of 0.4%! The LM3886 is far superior in this regard.

18th January 2009, 07:44 AM	#8
jaycee diyAudio Member Join Date: Apr 2004 Location: Norwich, UK	Yeah I meant to say 2xLM3886. You'd easily fit 2 LM3886 chips in the same place as the STK, as theyre quite big. LM4780 would work too but the pin spacing is a bit of a pain.

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